keyvalue = {"name" : "lilei", "age": 5, "list" : [1,2,3,4,5], "age" : 21123}
# keyvalue["age"] = 18
print(keyvalue["name"])
print(keyvalue["age"])
if keyvalue.get("weight"):
    print("有值")
else:
    print("无值")
print(keyvalue.get("list"))

